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39 lines
1.0 KiB
C++
39 lines
1.0 KiB
C++
//===----------------------------------------------------------------------===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is dual licensed under the MIT and the University of Illinois Open
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// Source Licenses. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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// UNSUPPORTED: c++98, c++03, c++11, c++14, c++17
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// <chrono>
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// class month;
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// constexpr bool ok() const noexcept;
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// Returns: 1 <= d_ && d_ <= 12
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#include <chrono>
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#include <type_traits>
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#include <cassert>
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#include "test_macros.h"
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int main()
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{
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using month = std::chrono::month;
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ASSERT_NOEXCEPT( std::declval<const month>().ok());
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ASSERT_SAME_TYPE(bool, decltype(std::declval<const month>().ok()));
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static_assert(!month{0}.ok(), "");
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static_assert( month{1}.ok(), "");
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assert(!month{0}.ok());
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for (unsigned i = 1; i <= 12; ++i)
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assert(month{i}.ok());
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for (unsigned i = 13; i <= 255; ++i)
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assert(!month{i}.ok());
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}
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